When prompted select OK to Allow the app Trimble Catalyst Service to access the USB device

Go to Settings > Location Provider

Select + Add a receiver

Select Catalyst from the list - If Catalyst is not displayed please remove the USB and reinsert. Wait until the prompt in Step 3 appears, select OK then retry. The Catalyst USB service must be running before it is recognised as a receiver option in Collector

Enter the Antenna Height an select OK

If you have not signed in to the Trimble Mobile Manager (TMM) application you will be prompted to sign in at this stage via 'Trimble Login Required'

Select the Catalyst receiver from your list and start your project to begin using Catalyst